I hope it works out for you :).
OTH I'm 37, at 15 I said I didn't want kids and everyone said "you'll change your mind", 22 years later I still haven't changed my mind in the slightest.
My partner has a little boy though and he's great, it's just I personally don't want kids (parents had mental health issues, I had a rough upbringing and I wouldn't want that for someone I was responsible for creating).